Mark Dickinson <dicki...@gmail.com> added the comment: Thanks, Eric. I noticed that the description was missing details of what happens to trailing zeros (i.e., they're removed) and what happens to special values: infinities, zeros, nans. Here's the revised revised text:
General format. For a given precision ``p >= 1``, this rounds the number to ``p`` significant digits and then formats the result in either fixed-point format or in scientific notation, depending on its magnitude. The precise rules are as follows: suppose that the result formatted with presentation type ``e`` and precision ``p-1`` would have exponent ``exp``. Then if ``-4 <= exp < p``, the number is formatted as if with presentation type ``f`` and precision ``p-1-exp``. Otherwise, the number is formatted as if with presentation type ``e`` and precision ``p-1``. In both cases trailing zeros are removed from the significand, as is the decimal point if there are no remaining digits following it. Postive and negative infinity, positive and negative zero, and nans, are formatted as ``inf``, ``-inf``, ``0``, ``-0`` and ``nan`` respectively. A precision of ``0`` is treated as equivalent to a precision of ``1``. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue7051> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
